2 * comedi/drivers/ni_daq_700.c
3 * Driver for DAQCard-700 DIO only
6 * COMEDI - Linux Control and Measurement Device Interface
7 * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 Description: National Instruments PCMCIA DAQCard-700 DIO only
28 Author: Fred Brooks <nsaspook@nsaspook.com>,
29 based on ni_daq_dio24 by Daniel Vecino Castel <dvecino@able.es>
30 Devices: [National Instruments] PCMCIA DAQ-Card-700 (ni_daq_700)
32 Updated: Thu, 21 Feb 2008 12:07:20 +0000
34 The daqcard-700 appears in Comedi as a single digital I/O subdevice with
35 16 channels. The channel 0 corresponds to the daqcard-700's output
36 port, bit 0; channel 8 corresponds to the input port, bit 0.
38 Direction configuration: channels 0-7 output, 8-15 input (8225 device
39 emu as port A output, port B input, port C N/A).
41 IRQ is assigned but not used.
44 #include <linux/interrupt.h>
45 #include <linux/slab.h>
46 #include "../comedidev.h"
48 #include <linux/ioport.h>
50 #include <pcmcia/cs.h>
51 #include <pcmcia/cistpl.h>
52 #include <pcmcia/cisreg.h>
53 #include <pcmcia/ds.h>
55 static struct pcmcia_device *pcmcia_cur_dev = NULL;
57 #define DIO700_SIZE 8 /* size of io region used by board */
59 static int dio700_attach(struct comedi_device *dev,
60 struct comedi_devconfig *it);
61 static int dio700_detach(struct comedi_device *dev);
63 enum dio700_bustype { pcmcia_bustype };
67 int device_id; /* device id for pcmcia board */
68 enum dio700_bustype bustype; /* PCMCIA */
69 int have_dio; /* have daqcard-700 dio */
70 /* function pointers so we can use inb/outb or readb/writeb */
72 unsigned int (*read_byte) (unsigned int address);
73 void (*write_byte) (unsigned int byte, unsigned int address);
76 static const struct dio700_board dio700_boards[] = {
78 .name = "daqcard-700",
79 /* 0x10b is manufacturer id, 0x4743 is device id */
81 .bustype = pcmcia_bustype,
86 /* 0x10b is manufacturer id, 0x4743 is device id */
88 .bustype = pcmcia_bustype,
94 * Useful for shorthand access to the particular board structure
96 #define thisboard ((const struct dio700_board *)dev->board_ptr)
98 struct dio700_private {
100 int data; /* number of data points left to be taken */
103 #define devpriv ((struct dio700_private *)dev->private)
105 static struct comedi_driver driver_dio700 = {
106 .driver_name = "ni_daq_700",
107 .module = THIS_MODULE,
108 .attach = dio700_attach,
109 .detach = dio700_detach,
110 .num_names = ARRAY_SIZE(dio700_boards),
111 .board_name = &dio700_boards[0].name,
112 .offset = sizeof(struct dio700_board),
115 /* the real driver routines */
124 struct subdev_700_struct {
125 unsigned long cb_arg;
126 int (*cb_func) (int, int, int, unsigned long);
130 #define CALLBACK_ARG (((struct subdev_700_struct *)s->private)->cb_arg)
131 #define CALLBACK_FUNC (((struct subdev_700_struct *)s->private)->cb_func)
132 #define subdevpriv ((struct subdev_700_struct *)s->private)
134 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s);
136 void subdev_700_interrupt(struct comedi_device *dev, struct comedi_subdevice *s)
140 d = CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG);
142 comedi_buf_put(s->async, d);
143 s->async->events |= COMEDI_CB_EOS;
145 comedi_event(dev, s);
147 EXPORT_SYMBOL(subdev_700_interrupt);
149 static int subdev_700_cb(int dir, int port, int data, unsigned long arg)
151 /* port is always A for output and B for input (8255 emu) */
152 unsigned long iobase = arg;
155 outb(data, iobase + DIO_W);
158 return inb(iobase + DIO_R);
162 static int subdev_700_insn(struct comedi_device *dev,
163 struct comedi_subdevice *s, struct comedi_insn *insn,
167 s->state &= ~data[0];
168 s->state |= (data[0] & data[1]);
171 CALLBACK_FUNC(1, _700_DATA, s->state & 0xff,
175 data[1] = s->state & 0xff;
176 data[1] |= CALLBACK_FUNC(0, _700_DATA, 0, CALLBACK_ARG) << 8;
181 static int subdev_700_insn_config(struct comedi_device *dev,
182 struct comedi_subdevice *s,
183 struct comedi_insn *insn, unsigned int *data)
187 case INSN_CONFIG_DIO_INPUT:
189 case INSN_CONFIG_DIO_OUTPUT:
191 case INSN_CONFIG_DIO_QUERY:
194 io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT :
205 static void do_config(struct comedi_device *dev, struct comedi_subdevice *s)
206 { /* use powerup defaults */
210 static int subdev_700_cmdtest(struct comedi_device *dev,
211 struct comedi_subdevice *s,
212 struct comedi_cmd *cmd)
219 tmp = cmd->start_src;
220 cmd->start_src &= TRIG_NOW;
221 if (!cmd->start_src || tmp != cmd->start_src)
224 tmp = cmd->scan_begin_src;
225 cmd->scan_begin_src &= TRIG_EXT;
226 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
229 tmp = cmd->convert_src;
230 cmd->convert_src &= TRIG_FOLLOW;
231 if (!cmd->convert_src || tmp != cmd->convert_src)
234 tmp = cmd->scan_end_src;
235 cmd->scan_end_src &= TRIG_COUNT;
236 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
240 cmd->stop_src &= TRIG_NONE;
241 if (!cmd->stop_src || tmp != cmd->stop_src)
254 if (cmd->start_arg != 0) {
258 if (cmd->scan_begin_arg != 0) {
259 cmd->scan_begin_arg = 0;
262 if (cmd->convert_arg != 0) {
263 cmd->convert_arg = 0;
266 if (cmd->scan_end_arg != 1) {
267 cmd->scan_end_arg = 1;
270 if (cmd->stop_arg != 0) {
286 static int subdev_700_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
293 static int subdev_700_cancel(struct comedi_device *dev,
294 struct comedi_subdevice *s)
301 int subdev_700_init(struct comedi_device *dev, struct comedi_subdevice *s,
302 int (*cb) (int, int, int, unsigned long), unsigned long arg)
304 s->type = COMEDI_SUBD_DIO;
305 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
307 s->range_table = &range_digital;
310 s->private = kmalloc(sizeof(struct subdev_700_struct), GFP_KERNEL);
316 CALLBACK_FUNC = subdev_700_cb;
320 s->insn_bits = subdev_700_insn;
321 s->insn_config = subdev_700_insn_config;
329 EXPORT_SYMBOL(subdev_700_init);
331 int subdev_700_init_irq(struct comedi_device *dev, struct comedi_subdevice *s,
332 int (*cb) (int, int, int, unsigned long),
337 ret = subdev_700_init(dev, s, cb, arg);
341 s->do_cmdtest = subdev_700_cmdtest;
342 s->do_cmd = subdev_700_cmd;
343 s->cancel = subdev_700_cancel;
345 subdevpriv->have_irq = 1;
349 EXPORT_SYMBOL(subdev_700_init_irq);
351 void subdev_700_cleanup(struct comedi_device *dev, struct comedi_subdevice *s)
354 if (subdevpriv->have_irq)
358 EXPORT_SYMBOL(subdev_700_cleanup);
360 static int dio700_attach(struct comedi_device *dev, struct comedi_devconfig *it)
362 struct comedi_subdevice *s;
363 unsigned long iobase = 0;
365 unsigned int irq = 0;
367 struct pcmcia_device *link;
369 /* allocate and initialize dev->private */
370 if (alloc_private(dev, sizeof(struct dio700_private)) < 0)
373 /* get base address, irq etc. based on bustype */
374 switch (thisboard->bustype) {
376 link = pcmcia_cur_dev; /* XXX hack */
379 iobase = link->resource[0]->start;
385 printk("bug! couldn't determine board type\n");
389 printk("comedi%d: ni_daq_700: %s, io 0x%lx", dev->minor,
390 thisboard->name, iobase);
393 printk(", irq %u", irq);
400 printk("io base address is zero!\n");
404 dev->iobase = iobase;
411 dev->board_name = thisboard->name;
413 if (alloc_subdevices(dev, 1) < 0)
416 /* DAQCard-700 dio */
417 s = dev->subdevices + 0;
418 subdev_700_init(dev, s, NULL, dev->iobase);
423 static int dio700_detach(struct comedi_device *dev)
425 printk("comedi%d: ni_daq_700: cs-remove\n", dev->minor);
428 subdev_700_cleanup(dev, dev->subdevices + 0);
430 if (thisboard->bustype != pcmcia_bustype && dev->iobase)
431 release_region(dev->iobase, DIO700_SIZE);
433 free_irq(dev->irq, dev);
438 /* PCMCIA crap -- watch your words, please! */
440 static void dio700_config(struct pcmcia_device *link);
441 static void dio700_release(struct pcmcia_device *link);
442 static int dio700_cs_suspend(struct pcmcia_device *p_dev);
443 static int dio700_cs_resume(struct pcmcia_device *p_dev);
446 The attach() and detach() entry points are used to create and destroy
447 "instances" of the driver, where each instance represents everything
448 needed to manage one actual PCMCIA card.
451 static int dio700_cs_attach(struct pcmcia_device *);
452 static void dio700_cs_detach(struct pcmcia_device *);
455 You'll also need to prototype all the functions that will actually
456 be used to talk to your device. See 'memory_cs' for a good example
457 of a fully self-sufficient driver; the other drivers rely more or
458 less on other parts of the kernel.
462 The dev_info variable is the "key" that is used to match up this
463 device driver with appropriate cards, through the card configuration
467 static const dev_info_t dev_info = "ni_daq_700";
469 struct local_info_t {
470 struct pcmcia_device *link;
472 struct bus_operations *bus;
475 /*======================================================================
477 dio700_cs_attach() creates an "instance" of the driver, allocating
478 local data structures for one device. The device is registered
481 The dev_link structure is initialized, but we don't actually
482 configure the card at this point -- we wait until we receive a
483 card insertion event.
485 ======================================================================*/
487 static int dio700_cs_attach(struct pcmcia_device *link)
489 struct local_info_t *local;
491 printk(KERN_INFO "ni_daq_700: cs-attach\n");
493 dev_dbg(&link->dev, "dio700_cs_attach()\n");
495 /* Allocate space for private device-specific data */
496 local = kzalloc(sizeof(struct local_info_t), GFP_KERNEL);
503 General socket configuration defaults can go here. In this
504 client, we assume very little, and rely on the CIS for almost
505 everything. In most clients, many details (i.e., number, sizes,
506 and attributes of IO windows) are fixed by the nature of the
507 device, and can be hard-wired here.
509 link->conf.Attributes = 0;
510 link->conf.IntType = INT_MEMORY_AND_IO;
512 pcmcia_cur_dev = link;
517 } /* dio700_cs_attach */
519 /*======================================================================
521 This deletes a driver "instance". The device is de-registered
522 with Card Services. If it has been released, all local data
523 structures are freed. Otherwise, the structures will be freed
524 when the device is released.
526 ======================================================================*/
528 static void dio700_cs_detach(struct pcmcia_device *link)
531 printk(KERN_INFO "ni_daq_700: cs-detach!\n");
533 dev_dbg(&link->dev, "dio700_cs_detach\n");
535 ((struct local_info_t *)link->priv)->stop = 1;
536 dio700_release(link);
538 /* This points to the parent struct local_info_t struct */
542 } /* dio700_cs_detach */
544 /*======================================================================
546 dio700_config() is scheduled to run after a CARD_INSERTION event
547 is received, to configure the PCMCIA socket, and to make the
548 device available to the system.
550 ======================================================================*/
552 static int dio700_pcmcia_config_loop(struct pcmcia_device *p_dev,
553 cistpl_cftable_entry_t *cfg,
554 cistpl_cftable_entry_t *dflt,
561 /* Does this card need audio output? */
562 if (cfg->flags & CISTPL_CFTABLE_AUDIO) {
563 p_dev->conf.Attributes |= CONF_ENABLE_SPKR;
564 p_dev->conf.Status = CCSR_AUDIO_ENA;
567 /* Do we need to allocate an interrupt? */
568 p_dev->conf.Attributes |= CONF_ENABLE_IRQ;
570 /* IO window settings */
571 p_dev->resource[0]->end = p_dev->resource[1]->end = 0;
572 if ((cfg->io.nwin > 0) || (dflt->io.nwin > 0)) {
573 cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt->io;
574 p_dev->io_lines = io->flags & CISTPL_IO_LINES_MASK;
575 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
576 p_dev->resource[0]->flags |=
577 pcmcia_io_cfg_data_width(io->flags);
578 p_dev->resource[0]->start = io->win[0].base;
579 p_dev->resource[0]->end = io->win[0].len;
581 p_dev->resource[1]->flags = p_dev->resource[0]->flags;
582 p_dev->resource[1]->start = io->win[1].base;
583 p_dev->resource[1]->end = io->win[1].len;
585 /* This reserves IO space but doesn't actually enable it */
586 if (pcmcia_request_io(p_dev) != 0)
590 /* If we got this far, we're cool! */
594 static void dio700_config(struct pcmcia_device *link)
599 printk(KERN_INFO "ni_daq_700: cs-config\n");
601 dev_dbg(&link->dev, "dio700_config\n");
603 ret = pcmcia_loop_config(link, dio700_pcmcia_config_loop, NULL);
605 dev_warn(&link->dev, "no configuration found\n");
613 This actually configures the PCMCIA socket -- setting up
614 the I/O windows and the interrupt mapping, and putting the
615 card and host interface into "Memory and IO" mode.
617 ret = pcmcia_request_configuration(link, &link->conf);
621 /* Finally, report what we've done */
622 dev_info(&link->dev, "index 0x%02x", link->conf.ConfigIndex);
623 if (link->conf.Attributes & CONF_ENABLE_IRQ)
624 printk(", irq %d", link->irq);
625 if (link->resource[0])
626 printk(", io %pR", link->resource[0]);
627 if (link->resource[1])
628 printk(" & %pR", link->resource[1]);
634 printk(KERN_INFO "ni_daq_700 cs failed");
635 dio700_release(link);
637 } /* dio700_config */
639 static void dio700_release(struct pcmcia_device *link)
641 dev_dbg(&link->dev, "dio700_release\n");
643 pcmcia_disable_device(link);
644 } /* dio700_release */
646 /*======================================================================
648 The card status event handler. Mostly, this schedules other
649 stuff to run after an event is received.
651 When a CARD_REMOVAL event is received, we immediately set a
652 private flag to block future accesses to this device. All the
653 functions that actually access the device should check this flag
654 to make sure the card is still present.
656 ======================================================================*/
658 static int dio700_cs_suspend(struct pcmcia_device *link)
660 struct local_info_t *local = link->priv;
662 /* Mark the device as stopped, to block IO until later */
665 } /* dio700_cs_suspend */
667 static int dio700_cs_resume(struct pcmcia_device *link)
669 struct local_info_t *local = link->priv;
673 } /* dio700_cs_resume */
675 /*====================================================================*/
677 static struct pcmcia_device_id dio700_cs_ids[] = {
678 /* N.B. These IDs should match those in dio700_boards */
679 PCMCIA_DEVICE_MANF_CARD(0x010b, 0x4743), /* daqcard-700 */
684 MODULE_DEVICE_TABLE(pcmcia, dio700_cs_ids);
685 MODULE_AUTHOR("Fred Brooks <nsaspook@nsaspook.com>");
686 MODULE_DESCRIPTION("Comedi driver for National Instruments "
687 "PCMCIA DAQCard-700 DIO");
688 MODULE_LICENSE("GPL");
690 struct pcmcia_driver dio700_cs_driver = {
691 .probe = dio700_cs_attach,
692 .remove = dio700_cs_detach,
693 .suspend = dio700_cs_suspend,
694 .resume = dio700_cs_resume,
695 .id_table = dio700_cs_ids,
696 .owner = THIS_MODULE,
702 static int __init init_dio700_cs(void)
704 pcmcia_register_driver(&dio700_cs_driver);
708 static void __exit exit_dio700_cs(void)
710 pr_debug("ni_daq_700: unloading\n");
711 pcmcia_unregister_driver(&dio700_cs_driver);
714 int __init init_module(void)
718 ret = init_dio700_cs();
722 return comedi_driver_register(&driver_dio700);
725 void __exit cleanup_module(void)
728 comedi_driver_unregister(&driver_dio700);